Sole of a golf club head



FIG. 1 is a bottom plan view of a design of a sole of a golf club head; and,

FIG. 2 is a sole, heel side perspective view of the sole of FIG. 1.

The portions of the club head shown in phantom are for illustrative purposes only and do not form any portion of the claimed design. 

CLAIM The ornamental design for a sole of a golf club head, as shown and described. 